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Messages - aiyahoke43

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General Astronomy & Observing / Question on NEMA 17 Stepper Motor
« on: July 05, 2018, 11:46:49 AM »
I found a new NEMA 17 Stepper Motor for sale on

I’m excited because this means I won’t have to wait longer to order from a Chinese manufacturer.

The specs on this new motor look like they’ll work for Farmbot Genesis 1.1 - right? Could anybody more knowledgeable help weigh in? This is the last piece I need for our build at the YMCA!


ATM, Optics and DIY Forum / Re: Star-tracker
« on: July 05, 2018, 11:42:26 AM »
"Busy building me a star-tracker. That's why I needed that worm/wormwheel-set I posted earlier.
The geared stepper has 1:100 ratio, the (self-made)worm/wheel another 1:157. That should be enough to slow things down.
Worm and wheel are pushed against each other with a controlled spring.
There's an adjustable green laser on board serving as 'Polaris pointer'.
There are 3 large and 2 smaller ball-bearings.
The unit measures 160x75x55mm(about 6x3x2 inches)
At the top of the smooth rod (on the right side) comes a small platform.
There are 3 large and 2 smaller printed parts"

I am agree what you said. Thanks for your sharing.

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